Pseudophakic Contact Lens Haptic Capsular Engagement
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Solution Overview
Problem
Conventional methods for correcting residual refractive errors after intraocular lens implantation are invasive, unpredictable, and carry high surgical risks, with difficulties in removal and potential for induced visual aberrations.
Innovation Solution
An intraocular pseudophakic contact lens with haptics that secure under the anterior leaflet of the capsular wall, allowing for partial correction of residual refractive errors and easy implantation and removal, utilizing optical lenses designed to correct specific refractive errors such as myopia, hyperopia, and astigmatism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods (replacing IOL, ablation surgery, piggyback IOL, intracorneal lenses) are used to correct residual refractive error, then refractive correction is achieved, but surgical risk and invasiveness increase
Solution Approach 1:
The pseudophakic contact lens is nested within the capsular bag, utilizing the existing surgical site and anatomical structures. The lens is positioned inside the capsular bag and secured by haptics that engage with the capsular wall, effectively nesting the corrective device within the already-implanted IOL system without requiring additional invasive procedures
Solution Approach 2:
The haptics serve as intermediary elements that mediate between the pseudophakic contact lens and the capsular wall. These haptics engage with the capsular wall to secure the lens in place, providing a reliable attachment mechanism that avoids direct suturing or more invasive fixation methods
2Measurement precision
If conventional methods are used to correct residual refractive error, then vision correction is achieved, but predictability decreases
Solution Approach 1:
The pseudophakic contact lens is designed with pre-configured haptics that are prepared in advance to engage with the capsular wall. The lens and its securing mechanism are pre-assembled and tested before implantation, ensuring predictable performance and reducing intraoperative variability that could lead to complications
Solution Approach 2:
The invention changes the physical parameters of the corrective approach by using a contact lens with specific haptic dimensions and engagement characteristics. The haptics are designed with specific geometries and material properties that enable reliable engagement with the capsular wall, providing consistent and predictable refractive outcomes
3Ease of operation
If invasive procedures are used to correct residual refractive error, then correction is achieved, but ease of removal decreases
Solution Approach 1:
The haptic-capsular wall engagement is designed to be dynamically adjustable. The haptics can be easily manipulated during surgery to achieve proper engagement, and if removal is needed, the engagement can be readily reversed without causing damage to the capsular wall or requiring complex removal procedures
Solution Approach 2:
The pseudophakic contact lens is designed as a segmented system with distinct optical and securing components. The haptics are separate functional elements that can be independently manipulated, allowing the lens to be easily removed by disengaging the haptics from the capsular wall without affecting the capsular structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a safer, more predictable method for correcting residual refractive errors with reduced surgical risk, allowing immediate vision correction and easy lens replacement or removal, while minimizing induced aberrations.
Implementation Method 1
an optical lens configured to at least partially correct a residual refractive error in an eye
Implementation Method 2
one or more haptics configured to be inserted under an anterior leaflet of a capsular wall in the eye in order to capture and confine the one or more haptics under the anterior leaflet and secure the intraocular pseudophakic contact lens against the artificial intraocular lens
Data Source
AI summary
An apparatus includes an intraocular pseudophakic contact lens. The intraocular pseudophakic contact lens includes an optical lens configured to at least partially correct a residual refractive error in an eye. The residual refractive error includes a refractive error that exists in the eye after implantation of an artificial intraocular lens in the eye. The intraocular pseudophakic contact lens also includes one or more haptics configured to be inserted under an anterior leaflet of a capsular wall in the eye in order to capture and confine the one or more haptics under the anterior leaflet and secure the intraocular pseudophakic contact lens against the artificial intraocular lens.